Catalytic process for the direct production of hydrocarbon fuels from syngas

Active Publication Date: 2013-03-12
GREYROCK TECH LLC
View PDF6 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0032]It has been discovered that the supported catalyst in accordance with the present invention, when used in a fixed bed reactor and using a unique in-situ reduction process is very effective at low pressures and produces a high selectivity to diesel type fuel product and results in a diesel fuel to wax ratio between about 5 to 1 and about 30 to 1 by weight. The operating pressure for F-T catalytic reaction is generally below 250 psi, preferably about 200 psi. Traditional F-T processes operate at 400 psi or higher.
[0033]The diesel fuel produced from the process in accordance with the present invention is ideal for blending with a petroleum diesel to improve its cetane content and to reduce sulfur in the blended fuel. The diesel fuel has lubricity ranging from 200 micron to 475 micron per ASTM D6079.
[00

Problems solved by technology

The complete removal of oxygenates including high molecular weight linear al

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalytic process for the direct production of hydrocarbon fuels from syngas
  • Catalytic process for the direct production of hydrocarbon fuels from syngas
  • Catalytic process for the direct production of hydrocarbon fuels from syngas

Examples

Experimental program
Comparison scheme
Effect test

example # 1

EXAMPLE #1

[0084]Supported catalysts are prepared using an incipient wetness procedure whereby cobalt and promoter metals are impregnated on a gamma alumina, quad-lobed support with a mean effective pellet radius of 0.25 mm and a mean pore diameter of 130 Angstroms. The surface area of the catalyst is 110 m2 / g as measured by BET / N2 physisorption technique. The crush strength of the catalyst is 4 lbs / mm. Drying and calcination steps are used in the production process to produce a catalyst with 20 wt % cobalt and 0.3 wt % platinum promoter. Following the production of the supported catalysts, the supported catalysts are loaded in a multi-tubular fixed bed reactor of a tube in shell design with 1″ (2.54 cm) diameter tubes. The catalyst is reduced with hydrogen at 75 psig and at a temperature less than 550° F. which are operating conditions that can be achieved in a fixed bed reactor that can be manufactured inexpensively.

[0085]In an alternative embodiment, the catalyst is reduced with a...

example # 2

EXAMPLE #2

[0090]In this example, improved cold flow properties of the diesel fuel fraction are desired. The same catalyst system and processes are used as described above in Example #1. Following the catalyst synthesis process, the diesel fuel fraction is contacted with a catalyst that performs isomerization under mild operating conditions, while minimizing cracking functions. In this example, the catalyst used is a platinum promoted tungstate-modified zirconia.

[0091]In this example, a trickle bed reactor is used; however, other known reactors can be used as well. The reactor is operated in a pressure range of about 100 psi to about 400 psi, ideally at 150 psi in a temperature range of about 350° F. to about 600° F., preferably at 425° F. The H2 / diesel fuel molar ratio is estimated using C16 (hexadecane) as an average compound of the diesel fuel and the H2 / n-C16 ratio is in the range of 1.5-5, preferably equal to 2 (therein requiring 22 standard cubic feet of H2 per gallon of n-C16 ...

example # 3

EXAMPLE #3

[0093]The cold flow properties of a diesel fuel fraction are improved by splash blending the diesel fuel fraction with a cold flow improver. The same catalyst system and processes are used as described above in Example #1. Following the catalyst synthesis process, the diesel fuel fraction is splash blended with a cold flow improver that is blended at 2000 ppm and consists of alkyl-methacrylate copolymers.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Fractionaaaaaaaaaa
Linear densityaaaaaaaaaa
Login to view more

Abstract

A unique process and catalyst is described that operates efficiently at low pressures for the direct production of a high cetane diesel type fuel or diesel type blending stock from stoichiometric mixtures of hydrogen and carbon monoxide. This invention allows for, but is not limited to, the economical and efficient production high quality diesel type fuels from small or distributed fuel production plants that have an annual production capacity of less than 100 million gallons per year by eliminating traditional hydrocracking and other costly upgrading processes. This catalytic process is ideal for distributed diesel fuel production plants such as biomass to fuel production plants and stranded natural gas to diesel fuel production plants, and other applications that require optimized economics based on supporting distributed feedstock resources.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]Not Applicable.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not Applicable.INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC[0003]Not Applicable.BACKGROUND OF THE INVENTION[0004]1. Field of the Invention[0005]This invention pertains generally to a unique catalyst and associated catalytic processes that operate at low pressures, for the direct, efficient production of high quality diesel-type fuels. These diesel-type fuels have a high cetane number, good lubricity, and almost no sulfur which are ideal as either a neat fuel, as a blend with current diesel-type fuel stocks for use in light and heavy duty diesel vehicles, as aviation fuels, in off-road diesel vehicles, in emerging gasoline direct injection engines, and in other applications.[0006]More particularly, the present invention pertains to catalytic processes that allow for the elimination of costly and complex hydrocracking or other product u...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C27/00
CPCC10G2/332C10G2/333B01J21/04B01J23/745B01J23/75B01J23/755B01J23/8896B01J23/8906B01J23/8913B01J23/892B01J35/023B01J35/1019B01J35/1061B01J37/0201C10G45/62C10L1/1973C10L10/14B01J37/18C10L1/1963C10L1/1966
Inventor SCHUETZLE, ROBERTSCHUETZLE, DENNISDE VILLIERS, DAVID
Owner GREYROCK TECH LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap